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Home >> Volkswagen >> 2012 >> Passat TDI SE, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - Generic Scan Tool - Engine Code: CKRA >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Reducing Agent Reservoir Processing Unit With Reservoir Sensor, Checking >> Test Procedure
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Test Procedure

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK 

Start diagnosis

-- Remove the Reducing Agent Tank Assembly. The assembly is located above the rear muffler, mounted under the spare tire well, protected by a metal shield. Refer to the Repair Information for location and removal instructions.

-- Disconnect the T3 electrical harness connector at the Reducing Agent Reservoir Processing Unit -G698- / Reducing Agent Reservoir Sensor -G697-. -Double Arrows -

Fig 1: Identifying Connectors And Wire Holder
GWWN26-10822Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Switch the ignition On.

-- Using a multimeter, measure the voltage between terminal 2 and 3 of the Reducing Agent Reservoir Processing Unit -G698- / Reducing Agent Reservoir Sensor -G697- electrical harness connector. Refer to Wiring Diagrams for circuit details.

Specified value: Battery voltage

-- Switch the ignition Off.

If the specified value was Not obtained:

-- Check the wiring for a short circuit to ground, high resistance or an open circuit.

-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.

-- If necessary, repair the wiring or connections and replace any open fuses.

-- Go to Final Procedures 

If the specified value was obtained:

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